Oh man, alright, I opened the game on Edge only to get the same error as you described. Looking into it, it seems that some new-ish update on Chromium (The software that Edge and Chrome relies on) has made pretty much any Renpy browser games defunct on that specific browser. I can say with certainty that at the very least Firefox runs the game without any issue, so that's likely your best bet. Sorry for the inconvience ^^;;;